VRF Name as Identifier

Prior to this feature, the communication between SMF and UPF, related to VRF, was done through vrf-id. This required the operator to have all the VRFs configured in both SMF and UPF, and also in the same order.

With this feature, vrf-name is used as identifier in all the communication between SMF and UPF with respect to VRFs, eliminating the requirement of configuring all the VRFs in UPF. Operator can configure VRFs in different order at SMF and UPF, and still can identify the VRF since vrf-name is same in both the nodes.